click below
click below
Normal Size Small Size show me how
Extraoral Imaging
Extraoral Imaging Vocabulary
| Term | Definition |
|---|---|
| Cephalostat | Special device that allows the operator to easily position both film and patient. |
| Computed tomography (toe-MOG-ruh-fee) (CT) | Radiographic technique that produces images or “slices” of one layer or section of the specific areas. Also referred to as computed axial tomography (CAT scan). |
| Cone beam computed tomography (CBCT) | A three-dimensional digital imaging method that uses a cone-shaped beam of radiation that rotates around the patient. |
| Digital panoramic units | A filmless method of recording a panoramic image and displaying it by using an electronic sensor and a computer to process and store the image. |
| Exposure controls | Feature that allows the operator to adjust the milliamperage and kilovoltage settings. |
| Extraoral images | Images taken when large areas of the skull or jaw must be examined. |
| Extraoral imaging | An image of the teeth and bones made by placing the film or cassette against the face or the head and projecting the x-rays from the opposite side. |
| Field of view | The area that can be shown when performing imaging procedures. |
| Focal trough | Imaginary three-dimensional horseshoe-shaped zone used to focus panoramic radiographs. |
| Frankfort plane | Imaginary plane that passes through the top of the ear canal and the bottom of the eye socket. |
| Midsagittal plane | Imaginary line that divides the patient’s face into right and left sides. |
| Temporomandibular joint | Joint on each side of the head that allows movement of the mandible. |
| Three-dimensional digital imaging | An image that demonstrates the anatomy in three dimensions. |